ST4000NM027B Seagate Exos 7E10 4TB SAS 256 MB 3.5" Server HDD

Capacity-Optimised 3.5" Enterprise SAS HDD featuring dual-port resiliency with the ST4000NM027B

The ST4000NM027B is a 4TB 3.5" enterprise HDD engineered for SAS backplanes in modern server and storage platforms where CPU and memory resources are reserved for virtualization, analytics, and data services rather than storage overhead. In tiered architectures, the drive supports bulk and warm-data tiers that complement compute nodes running current-generation multi-core CPUs and high-density DRAM, keeping IOPS expectations aligned with capacity-centric designs.

With dual-port SAS connectivity, the ST4000NM027B integrates cleanly into redundant controllers and multipath configurations, improving availability during path failover and maintenance. CMR recording and a 7200 RPM spindle provide consistent write behavior for RAID groups, while Advanced Format support (512e/4Kn) helps standardize sector formats across mixed estates. For expansion planning, the ST4000NM027B fits common 12Gb/s SAS enclosures and scales predictably across wider RAID pools and object/file storage nodes. Built-in security via SED with Instant Secure Erase supports decommissioning workflows, and T10 DIF/PI strengthens end-to-end integrity in shared storage fabrics.

Why Choose the ST4000NM027B?

The ST4000NM027B targets high-density capacity per rack unit without sacrificing enterprise control-plane requirements such as dual-port access, deterministic RAID behavior, and 24x7 duty cycles. It is well suited to standardized fleet deployments where consistent media characteristics, secure handling, and predictable thermals simplify scaling across arrays and server storage tiers.

Seagate designs the Exos enterprise line with a reliability-first engineering approach, focusing on sustained operation, error handling, and compatibility with data centre SAS ecosystems. The platform aligns with operational standards for continuous environments, supporting integrity and security features that reduce risk across the drive lifecycle.

Key Applications:

• Data centre bulk storage tiers
• Capacity-optimised RAID pools
• Virtualization storage for warm data
• File and object storage nodes
• Backup and archival staging

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your storage architecture and rollout volume, helping you standardize on the ST4000NM027B across server and array tiers. For larger deployments, bulk order discount options support efficient procurement planning and consistent fleet expansion.